Cutting-forceps.



S. J. BRANDEIS.

CUTTING FORCEPS.

APPLICATION FILED SEPT. 14, 191m 1 ,290,501 Patented Jan. 7, 1919.

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SOLOMON J. BRANDEIS, on NEW YORK, 1v. Y.-

GUTTING-FORCEPS.

Specification of Letters Patent.

Patented Jan. 7, 1919.

Application filed September 14, 1918. Serial No. 254,047.

To all whom it may concern: 7

Be it known that I, SOLOMON J. BRAN- DEIS, a citizen of the United States, residing at New York, inthe county ofNew York and State of New York, have invented certain new and useful Improvements in Cutting-Forceps; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it I appertains to make and use the same, reference being had to the accompanying drawings, and to characters of reference marked thereon, which form a part of this specification.

This invention has reference, generally, to

improvements in tools for dentists use; the

same relates, more particularly, to a novel construction of cutting forceps adapted to be used for cutting or slitting crowns or caps in order that the same may be removed from the teeth of the patient.

The invention has'for its principal object to provide a forceps by means of which a cutting tool may be operated against a crown or cap in which the patients tooth is incased, and which it is desired to remove, in such manner that thecutting tool may be forced against the side of the crown or cap with. a cutting or slitting effect; and, a further object of the invention is to provide a cutting forceps, for the above statedpurpose, which is simply, strongly and conveniently constructed so as to be readily adjustable for easy and dextrous application to the tooth wherever the same may be located in the mouth of the patient, that is, in either the front, left side or right side of the mouth, to this end one jaw of the forceps is constructed to hold a cutting tool in either forward, left hand or right hand projection, the cutting tool being interchangeable to any of said positions, while the other jaw of the forceps is provided with a fixed forwardly projecting tooth engaging means for giving purchase to the operation of the cut: ting tool when operating from the forwardly projecting position, and an ad ustable or movable transverse tooth engaging means which may be adjusted for service in giving purchase to the operation of the cutting tool when operating in either left or right projecting position, as the case may be.

Other objects I, of this invention, not at this time more particularly enumerated, will be clearly understood from the following detailed description of the same.

With the various objects of the invention in vlew, the same consists, primarily, in the novel construction of dentists cutting forceps hereinafter more fully set forth; and, the said invention consists,furthermore, in

the novel arrangements and combinations of the various devices and parts, as well as in the details 'of the construction thereof, all of which will be hereinafter more fully de scribed, and then finally embodied in the claims which are appended hereto.

The invention is clearly illustrated in the accompanying drawings, in which Figure 1 is a topedge view of a dentists cutting forceps made according to and embodying the principles of the present invention; Fig. 21s a side elevation of thev same; and Fig. 3 is a bottom edge view of the same.

' Fig. 4 is a vertical longitudinal section through the jaws of the cutting forceps, the same being taken on line 4=4 in said Fig. 1, and being drawn on an enlarged scale; Fig. 5 is a transverse vertical section through the jaws of the cutting forceps, taken on line 55 in said Fig. 2, and being. also drawn on an enlarged scale; and Fig. 6 is a horizontal section through the upperjaw of the cutting forceps, taken on line 66 in said Fig. 2, and also drawn on an enlarged scale with-the variousadjusted positions of the parts shown in dotted outline. Similar characters of reference are employed in all of said above described views, to indicate correspondingparts. I

Referring now to the said drawings, the reference character 1 indicates the complete novel construction of dental tool, which may be termed a cutting forceps, the same com prising a pair of handle-portions 2 and 3, which are pivotally connected together by means of a pivot pin or rivet l, substantially as illustrated. The handle-portion 2 is provided with a jaw-section 5, and the handle-portion 3 is provided with a jawsection 6.- Y

Integrally connected with'the free end of said jaw-section 5 is a socket-member 7 hit-V? ing a longitudinally disposed receivingsocket 8, open at its outer or forwarden'd, and a transversely disposed receiving socket 9 openat each end thereof. at each side of v said socket-member 7. The respective receiving sockets 8 and 9 lie in the same horizontal plane and intersect each other. Extending vertically upward through said socket-member 7 above the point of intersection of said receiving sockets 8 and 9, is an internally threaded opening 19, in which is arranged a set or binding screw 11. The reference character 12 indicates'the shank of a suitable cutting tool or knife-element 13 which is receivable in either of the receiving sockets 8 or 9 according to thedireetion of projection desired thereof. The shank 12 of said cutting-tool or knife-element 13 is provided on its upper side with flattened surface 14 adapted to be engaged by the inner end of said set or binding screw 11 when the latter is turned home thereon, to both hold said cutting-tool or knife-element rigidly in the desired receiving-socket both against longitudinal displacement and against any turning or twisting movement within the latter.

Integrally connected with the free end of said jaw section 6 so as to project forwardly therefrom beyond the end of the socketmember of the jaw section 5, when the jawsections are closed together is a longitudinal tooth engaging or gripping member 15, the upper surface of which lies in the plane of the meeting surface of said jaw-section 6. The upper surface of said tooth engaging or gripping member 15 is provided with a plurality of transverse grooves or channels 16 adapted to roughen therengaging surface thereof, so that when the 821111818 positioned against the bottom of a tooth in operating the tool any tendency of the engaging or gripping member 15 to slip away'is thereby prevented. Formed in the meeting surface of said jaw-sectionfi at a point immediately below the socket-member 7 of the jaw-section 5 when the j caw-sections are closed together, is a transverse channel or guideway 17 having undercut sides 18. Slidably disposed in said channel or guideway 17 so as to be movable or adjustable transversely of the jaw-section 6, is an adjustable plate 19 iaving chamfered sides 19 to fit the undercut sides of said channel or guideway 17, and having at one end a tooth engaging or gripping member 20, and at its opposite end a similar tooth engaging or gripping member 21, each of which engaging or gripping members 20 and 21 are provided in their upper surfaces with transverse grooves or channels 22 for roughening the tooth engaging surfaces thereof. Fixed in the underside of said adjustable plate beneath each engaging or gripping member 20 and 21', so as to project downwardly therefrom, is a stop-pin 23, which respectively limit the adjustable movement of said plate 19 in each direction by engaging respectively the sides of the jawsection 6. Extending vertically upwardly from the undersideof said jaw-section 6, beneath said plate 19, is an internally threaded opening 24, in which isarrangcd a set or binding screw 25 which may be screwed home against the bottom of said plate 19 to rigidly lock the same in the desired adjusted position.

lVhen it is desired to work directly with the cutting forceps upon a. crowned or capped tooth in the front of the patients mouth. the cutting-tool or knife-element 13 is arranged with its shank 12 disposed in said longitudinal receiving-socket 8, and locked therein by the set or binding screw 11, so that the tool 13 projects forwardly toward or in the direction of the longitudinal tooth engaging or gripping member 15, so that the necessary cooperation of theformer with the latter is possible, as indicated by the dotted representation F in Fig. 6 of the drawings.

hen it is desired to work with the cutting forceps upon. a crowned or capped tooth in the left-hand side of the mouth of the patient, the cutting-tool or knife-element 13 is arranged with its shank 12 entering through the left-hand mouth or opening of the transverse receiving socket 9, the same being locked therein by the set'or binding screw 11, so that the tool 13projects to the left, as shown in solid lines in the drawings. The adjustable plate 19 is moved through the channel or guidewayl? until its left hand tooth engaging or gripping member 20 is positioned operatively beneath the leftward projecting knife-element, as also shown by the solid lines in the drawings. The leftward movement of the plate '19 is properly arrested or stopped by the engagement of the right hand stop-pin 23 with the right side of the jaw-section 6. When thus properly positioned the plate 19 is rigidly locked in place by screwing home the set or binding screw 25. r I

lVhen it is desired to work with the cutting forceps upon a crowned or capped tooth in the right hand side of the mouth of the patient, the cutting-tool or knife-element 13 is reversed in the transverse receiving socket 9 with its shank entering the right hand mouth or opening of said receiving socket.

the same being locked therein by the set or binding screw 11, so' that the tool 13 projects to the right, as shown by the dotted representation thereof R in F igs,v 5 and 6 of the drawings. The adjustable plate 19 is moved through the channel or guideway 17 until its right hand tooth engaging or gripping member 21 is positioned ope'ratively beneath the rightward projecting knife-element, as shown by the dotted representation thereof R in Figs. 5 and 6 of the drawings. The rightward movement of the plat-e 19 is properly arrested or'stopped by the engagement of the left hand stop-pin 23 with the left side of the jaw-section 6. When thus properly positioned the plate 19 is rigidly locked in place by screwing home the set or binding screw 25.

I am aware that some changes may be made in the several arrangements and combinations of the parts of the novel cutting forceps, as well as in the details of the construction thereof, without departing from the scope of the present invention as above described, and as defined in the appended claims. Hence, I do not limit my invention to the exact arrangements and combinations of the said parts as hereinabove described, nor do I confine myself to theexact details of the construction of said parts as illus- V trated in the accompanying drawings.

I claim l. A cutting forceps comprising a pair of pivoted jaw-sections, a knife-element for connection with one j aw-section, means connected with said j aw-section for securing and supporting said knife-element in either forward, left or right projection therefrom,

a longitudinal forwardly projecting tooth gripping means connected with the other jaw-section, and a transversely adjustable plate having tooth gripping means at its ends slidably related to said last mentioned jaw-section for desired projection to either the left or right thereof.

2. A cutting forceps comprising a pair of pivoted j aw-sections, a knife-element for connection with one jaw-section, means connected with said jaw-section for securing and supporting said knife-element in either forward, left or right projection therefrom, a longitudinal forwardly projecting tooth gripping means connected with the other j aw-section, said last mentioned j aw-section having a transverse guideway, a transverse plate having tooth gripping means at each end thereof slidable in said guideway for desired projection to either the left or right of said latter jaw-section, stop-means connected with said plate for engagement with the sides of said latter jaw-section to limit the said projecting movement in either direction, and means for locking said plate in desired adjusted position.

3. A cutting forceps comprising a pair of pivoted jaw-sections, a knife-element for connection with one jaw-section, means connected with said j aw-section for securing and supporting said knife-element in either forward, left or right projection therefrom,

a longitudinal forwardly projecting tooth 7 gripping means connected with the other j aw-section, said last mentioned j aw-section having a transverse guideway, a transverse plate having tooth gripping means at each end thereof slidable in said guideway for desired projection to either the left or right of said latter jaw-section, stop-means connected with said plate for engagement with the sides of said latter jaw-section to limit the said projecting movement in either direction, said latter jaw-section having an internally threaded vertical opening beneath and passing upwardly to said plate, and a binding screw in said opening for engaging said plate to lock the same in desired adjusted position.

4. A cutting forceps comprising a pair of pivoted jaw-sections, a knife-element for connection with one jaw-section, a socket member having a longitudinal receiving socket open at its forward end and an intersecting transverse receiving socket open at its respective ends, the shank of said knifeelement being selectively receivable in said respective receiving sockets for desired forward, left or right projection from said jawsection, said socket-member being further provided with a vertical internally threaded opening disposed above the intersection of said receiving sockets, a binding screw arranged in said opening, a longitudinally forwardly projecting tooth gripping means connected with the other jaw-section, and a transversely adjustable plate having tooth gripping means at its ends slidably related Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

